The Tor Browser / file comparison
comparison: js/src/jit-test/tests/debug/Environment-variables.js
js/src/jit-test/tests/debug/Environment-variables.js
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:1eba6cc53c6e |
|---|---|
| 1 // Comprehensive test of get/setVariable on many kinds of environments and | |
| 2 // bindings. | |
| 3 | |
| 4 load(libdir + "asserts.js"); | |
| 5 | |
| 6 var cases = [ | |
| 7 // global bindings and bindings on the global prototype chain | |
| 8 "x = VAL; @@", | |
| 9 "var x = VAL; @@", | |
| 10 "Object.prototype.x = VAL; @@", | |
| 11 | |
| 12 // let, catch, and comprehension bindings | |
| 13 "let x = VAL; @@", | |
| 14 "{ let x = VAL; @@ }", | |
| 15 "let (x = VAL) { @@ }", | |
| 16 "try { throw VAL; } catch (x) { @@ }", | |
| 17 "try { throw VAL; } catch (x) { @@ }", | |
| 18 "for (let x of [VAL]) { @@ }", | |
| 19 "for each (let x in [VAL]) { @@ }", | |
| 20 "switch (0) { default: let x = VAL; @@ }", | |
| 21 "[function () { @@ }() for (x of [VAL])];", | |
| 22 // "((function () { @@ })() for (x of [VAL])).next();", // bug 709367 | |
| 23 | |
| 24 // arguments | |
| 25 "function f(x) { @@ } f(VAL);", | |
| 26 "function f([w, x]) { @@ } f([0, VAL]);", | |
| 27 "function f({v: x}) { @@ } f({v: VAL});", | |
| 28 "function f([w, {v: x}]) { @@ } f([0, {v: VAL}]);", | |
| 29 | |
| 30 // bindings in functions | |
| 31 "function f() { var x = VAL; @@ } f();", | |
| 32 "function f() { let x = VAL; @@ } f();", | |
| 33 "function f([x]) { let x = VAL; @@ } f(['fail']);", | |
| 34 "function f(x) { { let x = VAL; @@ } } f('fail');", | |
| 35 "function f() { function x() {} x = VAL; @@ } f();", | |
| 36 | |
| 37 // dynamic bindings | |
| 38 "function f(s) { eval(s); @@ } f('var x = VAL');", | |
| 39 "function f(s) { let (x = 'fail') { eval(s); } x = VAL; @@ } f('var x;');", | |
| 40 "var x = VAL; function f(s) { eval('var x = 0;'); eval(s); @@ } f('delete x;');", | |
| 41 "function f(obj) { with (obj) { @@ } } f({x: VAL});", | |
| 42 "function f(obj) { with (obj) { @@ } } f(Object.create({x: VAL}));", | |
| 43 "function f(b) { if (b) { function x(){} } x = VAL; @@ } f(1);", | |
| 44 ]; | |
| 45 | |
| 46 var nextval = 1000; | |
| 47 | |
| 48 function test(code, debugStmts, followupStmts) { | |
| 49 var val = nextval++; | |
| 50 var hits = 0; | |
| 51 | |
| 52 var g = newGlobal(); | |
| 53 g.eval("function debugMe() { var x = 'wrong-x'; debugger; }"); | |
| 54 g.capture = null; | |
| 55 | |
| 56 var dbg = Debugger(g); | |
| 57 dbg.onDebuggerStatement = function (frame) { | |
| 58 if (frame.callee !== null && frame.callee.name == 'debugMe') | |
| 59 frame = frame.older; | |
| 60 var env = frame.environment.find("x"); | |
| 61 assertEq(env.getVariable("x"), val) | |
| 62 assertEq(env.setVariable("x", 'ok'), undefined); | |
| 63 assertEq(env.getVariable("x"), 'ok'); | |
| 64 | |
| 65 // setVariable cannot create new variables. | |
| 66 assertThrowsInstanceOf(function () { env.setVariable("newVar", 0); }, TypeError); | |
| 67 hits++; | |
| 68 }; | |
| 69 | |
| 70 code = code.replace("@@", debugStmts); | |
| 71 if (followupStmts !== undefined) | |
| 72 code += " " + followupStmts; | |
| 73 code = code.replace(/VAL/g, uneval(val)); | |
| 74 g.eval(code); | |
| 75 assertEq(hits, 1); | |
| 76 } | |
| 77 | |
| 78 for (var s of cases) { | |
| 79 // Test triggering the debugger right in the scope in which x is bound. | |
| 80 test(s, "debugger; assertEq(x, 'ok');"); | |
| 81 | |
| 82 // Test calling a function that triggers the debugger. | |
| 83 test(s, "debugMe(); assertEq(x, 'ok');"); | |
| 84 | |
| 85 // Test triggering the debugger from a scope nested in x's scope. | |
| 86 test(s, "let (y = 'irrelevant') { (function (z) { let (zz = y) { debugger; }})(); } assertEq(x, 'ok');"), | |
| 87 | |
| 88 // Test closing over the variable and triggering the debugger later, after | |
| 89 // leaving the variable's scope. | |
| 90 test(s, "capture = {dbg: function () { debugger; }, get x() { return x; }};", | |
| 91 "assertEq(capture.x, VAL); capture.dbg(); assertEq(capture.x, 'ok');"); | |
| 92 } |
